/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:01:35,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:01:35,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:01:35,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:01:35,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:01:35,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:01:35,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:01:35,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:01:35,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:01:35,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:01:35,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:01:35,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:01:35,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:01:35,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:01:35,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:01:35,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:01:35,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:01:35,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:01:35,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:01:35,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:01:35,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:01:35,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:01:35,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:01:35,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:01:35,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:01:35,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:01:35,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:01:35,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:01:35,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:01:35,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:01:35,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:01:35,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:01:35,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:01:35,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:01:35,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:01:35,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:01:35,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:01:35,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:01:35,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:01:35,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:01:35,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:01:35,441 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:01:35,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:01:35,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:01:35,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:01:35,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:01:35,502 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:01:35,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:01:35,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:01:35,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:01:35,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:01:35,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:01:35,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:01:35,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:01:35,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:01:35,506 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:01:35,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:01:35,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:01:35,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:01:35,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:01:35,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:01:35,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:01:35,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:01:35,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:35,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:01:35,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:01:35,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:01:35,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:01:35,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:01:35,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:01:35,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:01:35,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:01:35,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:01:36,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:01:36,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:01:36,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:01:36,013 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:01:36,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-27 01:01:36,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/feacf734b/54a96c441d044211b8cc3e5b33343772/FLAGe90de169e [2020-10-27 01:01:36,742 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:01:36,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0681a.c [2020-10-27 01:01:36,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/feacf734b/54a96c441d044211b8cc3e5b33343772/FLAGe90de169e [2020-10-27 01:01:37,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/feacf734b/54a96c441d044211b8cc3e5b33343772 [2020-10-27 01:01:37,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:01:37,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:01:37,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:37,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:01:37,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:01:37,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19065848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37, skipping insertion in model container [2020-10-27 01:01:37,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:01:37,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:01:37,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:37,446 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:01:37,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:01:37,577 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:01:37,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37 WrapperNode [2020-10-27 01:01:37,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:01:37,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:01:37,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:01:37,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:01:37,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... [2020-10-27 01:01:37,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:01:37,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:01:37,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:01:37,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:01:37,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:01:37,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:01:37,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:01:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:01:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-10-27 01:01:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2020-10-27 01:01:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2 [2020-10-27 01:01:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-27 01:01:37,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:01:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:01:37,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:01:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:01:37,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:01:37,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-27 01:01:37,786 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-10-27 01:01:37,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:01:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:01:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:01:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:01:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:01:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2020-10-27 01:01:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2 [2020-10-27 01:01:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-27 01:01:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:01:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:01:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:01:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-27 01:01:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:01:38,827 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:01:38,830 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-27 01:01:38,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:38 BoogieIcfgContainer [2020-10-27 01:01:38,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:01:38,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:01:38,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:01:38,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:01:38,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:01:37" (1/3) ... [2020-10-27 01:01:38,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b903662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:38, skipping insertion in model container [2020-10-27 01:01:38,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:01:37" (2/3) ... [2020-10-27 01:01:38,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b903662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:01:38, skipping insertion in model container [2020-10-27 01:01:38,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:01:38" (3/3) ... [2020-10-27 01:01:38,842 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0681a.c [2020-10-27 01:01:38,855 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:01:38,861 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:01:38,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:01:38,906 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:01:38,906 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:01:38,906 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:01:38,907 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:01:38,907 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:01:38,907 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:01:38,907 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:01:38,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:01:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-10-27 01:01:38,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:01:38,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:38,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:01:38,937 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:38,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:38,944 INFO L82 PathProgramCache]: Analyzing trace with hash 760112060, now seen corresponding path program 1 times [2020-10-27 01:01:38,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:38,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864659827] [2020-10-27 01:01:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:39,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:39,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:39,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:01:39,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-27 01:01:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 01:01:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:39,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:01:39,848 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 01:01:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:01:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:39,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:39,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:39,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:01:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:01:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 01:01:39,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:01:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:39,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:39,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 01:01:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:01:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:01:39,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:01:39,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 01:01:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:01:39,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:01:39,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:01:39,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:01:39,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 01:01:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:01:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:01:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:01:39,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864659827] [2020-10-27 01:01:39,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:01:39,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:01:39,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511501962] [2020-10-27 01:01:39,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:01:39,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:01:39,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:01:39,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:01:39,986 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-10-27 01:01:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:01:40,528 INFO L93 Difference]: Finished difference Result 217 states and 341 transitions. [2020-10-27 01:01:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:01:40,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 01:01:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:01:40,541 INFO L225 Difference]: With dead ends: 217 [2020-10-27 01:01:40,541 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 01:01:40,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:01:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 01:01:40,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-27 01:01:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-27 01:01:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 147 transitions. [2020-10-27 01:01:40,607 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 147 transitions. Word has length 20 [2020-10-27 01:01:40,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:01:40,608 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 147 transitions. [2020-10-27 01:01:40,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:01:40,608 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 147 transitions. [2020-10-27 01:01:40,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:01:40,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:01:40,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:01:40,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:01:40,610 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:01:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:01:40,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1505631205, now seen corresponding path program 1 times [2020-10-27 01:01:40,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:01:40,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099798511] [2020-10-27 01:01:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:01:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:01:40,696 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:01:40,696 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:01:40,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:01:40,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:01:40 BoogieIcfgContainer [2020-10-27 01:01:40,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:01:40,725 INFO L168 Benchmark]: Toolchain (without parser) took 3614.52 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.9 MB in the beginning and 156.4 MB in the end (delta: -29.5 MB). Peak memory consumption was 81.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:40,726 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:01:40,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.14 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 111.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:40,728 INFO L168 Benchmark]: Boogie Preprocessor took 93.21 ms. Allocated memory is still 151.0 MB. Free memory was 111.1 MB in the beginning and 107.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:40,729 INFO L168 Benchmark]: RCFGBuilder took 1159.60 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 95.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:40,730 INFO L168 Benchmark]: TraceAbstraction took 1889.25 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.1 MB in the beginning and 156.4 MB in the end (delta: -61.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. [2020-10-27 01:01:40,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 125.4 MB in the end (delta: 102.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 460.14 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 111.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.21 ms. Allocated memory is still 151.0 MB. Free memory was 111.1 MB in the beginning and 107.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1159.60 ms. Allocated memory is still 151.0 MB. Free memory was 107.9 MB in the beginning and 95.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1889.25 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.1 MB in the beginning and 156.4 MB in the end (delta: -61.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 269. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L265] double x = 0.0; [L266] double y = 0.0; [L267] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; [L267] RET, EXPR __ieee754_atan2(y, x) [L267] double res = __ieee754_atan2(y, x); [L269] EXPR res == 0.0 && __signbit_double(res) == 0 [L269] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L270] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0681a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 12 SDslu, 133 SDs, 0 SdLazy, 144 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...